---
title: " Kubernetes 社区每周聚会笔记- 2015年4月24日 "
date: 2015-04-30
slug: weekly-kubernetes-community-hangout_29
url: /blog/2015/04/Weekly-Kubernetes-Community-Hangout_29
---

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---
title: " Weekly Kubernetes Community Hangout Notes - April 24 2015 "
date: 2015-04-30
slug: weekly-kubernetes-community-hangout_29
url: /blog/2015/04/Weekly-Kubernetes-Community-Hangout_29
---

-->

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Every week the Kubernetes contributing community meet virtually over Google Hangouts. We want anyone who's interested to know what's discussed in this forum.  
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每个星期，Kubernetes 贡献者社区几乎都会在谷歌 Hangouts 上聚会。我们希望任何对此感兴趣的人都能了解这个论坛的讨论内容。

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Agenda:

* Flocker and Kubernetes integration demo

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日程安排：

* Flocker 和 Kubernetes 集成演示

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Notes:

* flocker and kubernetes integration demo
* * Flocker Q/A

    * Does the file still exists on node1 after migration?

    * Brendan: Any plan this to make it a volume? So we don't need powerstrip?

        * Luke:  Need to figure out interest to decide if we want to make it a first-class persistent disk provider in kube.

        * Brendan: Removing need for powerstrip would make it simple to use. Totally go for it.

        * Tim: Should take no more than 45 minutes to add it to kubernetes:)

-->
笔记：

* flocker 和 kubernetes 集成演示
* * Flocker Q/A

    * 迁移后文件是否仍存在于node1上？

    * Brendan: 有没有计划把它做成一本书？我们不需要 powerstrip？

        * Luke:  需要找出感兴趣的来决定我们是否想让它成为 kube 中的一个一流的持久性磁盘提供商。

        * Brendan: 删除对 powerstrip 的需求会使其易于使用。完全去做。

        * Tim: 将它添加到 kubernetes 应该不超过45分钟:)

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    * Derek: Contrast this with persistent volumes and claims?

        * Luke: Not much difference, except for the novel ZFS based backend. Makes workloads really portable.

        * Tim: very different than network-based volumes. Its interesting that it is the only offering that allows upgrading media.

        * Brendan: claims, how does it look for replicated claims? eg Cassandra wants to have replicated data underneath. It would be efficient to scale up and down. Create storage on the fly based on load dynamically. Its step beyond taking snapshots - programmatically creating replicas with preallocation.

        * Tim: helps with auto-provisioning.

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    * Derek: 持久卷和请求相比呢?

        * Luke: 除了基于 ZFS 的新后端之外，差别不大。使工作负载真正可移植。

        * Tim: 与基于网络的卷非常不同。有趣的是，它是唯一允许升级媒体的产品。

        * Brendan: 请求，它如何查找重复请求？Cassandra 希望在底层复制数据。向上和向下扩缩是有效的。根据负载动态地创建存储。它的步骤不仅仅是快照——通过编程使用预分配创建副本。

        * Tim: 帮助自动配置。
        
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    * Brian: Does flocker requires any other component?

        * Kai: Flocker control service co-located with the master.  (dia on blog post). Powerstrip + Powerstrip Flocker. Very interested in mpersisting state in etcd. It keeps metadata about each volume.

        * Brendan: In future, flocker can be a plugin and we'll take care of persistence. Post v1.0.

        * Brian: Interested in adding generic plugin for services like flocker.

        * Luke: Zfs can become really valuable when scaling to lot of containers on a single node.

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    * Brian: flocker 是否需要其他组件？

        * Kai: Flocker 控制服务与主服务器位于同一位置。(dia 在博客上)。Powerstrip + Powerstrip Flocker。对在 etcd 中持久化状态非常有趣。它保存关于每个卷的元数据。

        * Brendan: 在未来，flocker 可以是一个插件，我们将负责持久性。发布 v1.0。

        * Brian: 有兴趣为 flocker 等服务添加通用插件。

        * Luke: 当扩展到单个节点上的许多容器时，Zfs 会变得非常有价值。

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    * Alex: Can flocker service can be run as a pod?

        * Kai: Yes, only requirement is the flocker control service should be able to talk to zfs agent. zfs agent needs to be installed on the host and zfs binaries need to be accessible.

        * Brendan: In theory, all zfs bits can be put it into a container with devices.

        * Luke: Yes, still working through cross-container mounting issue.

        * Tim: pmorie is working through it to make kubelet work in a container. Possible re-use.

    * Kai: Cinder support is coming. Few days away.
* Bob: What's the process of pushing kube to GKE? Need more visibility for confidence.

-->

    * Alex: flocker 服务可以作为 pod 运行吗？

        * Kai: 是的，唯一的要求是 flocker 控制服务应该能够与 zfs 代理对话。需要在主机上安装 zfs 代理，并且需要访问 zfs 二进制文件。

        * Brendan: 从理论上讲，所有 zfs 位都可以与设备一起放入容器中。

        * Luke: 是的，仍然在处理跨容器安装问题。

        * Tim: pmorie 正在通过它使 kubelet 在容器中工作。可能重复使用。

    * Kai: Cinder 支持即将到来。几天之后。
* Bob: 向 GKE 推送 kube 的过程是怎样的？需要更多的可见度。


